vinniefalco / DSPFilters

A Collection of Useful C++ Classes for Digital Signal Processing
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Inconsistent gain at cutoff frequency #49

Open Stefeg opened 5 years ago

Stefeg commented 5 years ago

I've noticed that the gain at the cutoff frequency is not consistently -3dB, and that it changes based on the order and filter type. For the Butterworth filter it appears to be consistently -3dB, but for the others it varies. Did anybody notice this? Or does anybody know why this is happening and how to fix it.